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| author |  Atish Patra <atishp@rivosinc.com>
| 2024-04-20 08:17:38 -0700 |
|---|---|---|
| committer |  Anup Patel <anup@brainfault.org>
| 2024-04-26 13:14:10 +0530 |
| commit | 13cb706e28d9d4d3259954eb08c57b990e4429ea (patch) | |
| tree | 305c6abff236d36f96ba23586fc47d6958c99879 /tools/testing/selftests/kvm/lib | |
| parent | KVM: riscv: selftests: Add SBI PMU selftest (diff) | |
| download | linux-13cb706e28d9d4d3259954eb08c57b990e4429ea.tar.gz linux-13cb706e28d9d4d3259954eb08c57b990e4429ea.tar.bz2 linux-13cb706e28d9d4d3259954eb08c57b990e4429ea.zip | |
KVM: riscv: selftests: Add a test for PMU snapshot functionality
Verify PMU snapshot functionality by setting up the shared memory
correctly and reading the counter values from the shared memory
instead of the CSR.
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Atish Patra <atishp@rivosinc.com>
Link: https://lore.kernel.org/r/20240420151741.962500-23-atishp@rivosinc.com
Signed-off-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'tools/testing/selftests/kvm/lib')
| -rw-r--r-- | tools/testing/selftests/kvm/lib/riscv/processor.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c b/tools/testing/selftests/kvm/lib/riscv/processor.c index e8211f5d6863..ccb35573749c 100644 --- a/tools/testing/selftests/kvm/lib/riscv/processor.c +++ b/tools/testing/selftests/kvm/lib/riscv/processor.c @@ -502,3 +502,15 @@ bool guest_sbi_probe_extension(int extid, long *out_val) return true; } + +unsigned long get_host_sbi_spec_version(void) +{ + struct sbiret ret; + + ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_GET_SPEC_VERSION, 0, + 0, 0, 0, 0, 0); + + GUEST_ASSERT(!ret.error); + + return ret.value; +} |